70 citations · 98 across the 4 of their papers we have counts for
12 papers
What can the alignments of the velocity moments tell us about the nature of the potential?
J. An, N. W. Evans
We prove that, if the time-independent distribution function of a steady-state stellar system is symmetric under velocity inversion such that $F(-v_1,v_2,v_3;x)=F(v_1,v_2,…
Microlensing, Brown Dwarfs and GAIA
N. W. Evans
The GAIA satellite can precisely measure the masses of nearby brown dwarfs and lower main sequence stars by the microlensing effect. The scientific yield is maximised if the microl…
Balancing mass and momentum in the Local Group
Jonathan D. Diaz, Sergey E. Koposov, Mike Irwin +2
In the rest frame of the Local Group (LG), the total momentum of the Milky Way (MW) and Andromeda (M31) should balance to zero. We use this fact to constrain new solutions for the…
A Very Simple Cusped Halo Model
N. W. Evans, A. A. Williams
We introduce a very simple model of a dark halo. It is a close relative of Hernquist's model, being generated by the same transformation but this time applied to the logarithmic po…
The stretching of Hercules
A. J. Deason, V. Belokurov, N. W. Evans +2
We present VLT/FORS2 spectroscopy of candidate blue horizontal branch (BHB) stars in the vicinity of the Hercules ultrafaint dwarf galaxy. We identify eight convincing Hercules BHB…
Line Profiles from Discrete Kinematic Data
N. C. Amorisco, N. W. Evans
We develop a method to extract the shape information of line profiles from discrete kinematic data. The Gauss-Hermite expansion, which is widely used to describe the line of sight…